Coulee Dam ZIP Codes — Okanogan County, WA

There is one unique ZIP code in Coulee Dam, Washington and it is 99116. Area code: 509.

ZIP codes

47.20

sq mi land

4.43

sq mi water

509

area code

Coulee Dam, WA ZIP code map

About Coulee Dam, WA

Coulee Dam is a small city located in Okanogan County, Washington. This unique town is primarily known for its proximity to the Grand Coulee Dam, one of the largest concrete structures in the United States. The dam plays a significant role in the region's economy and attracts numerous visitors year-round.

Location & geography

Coulee Dam is situated in north-central Washington, nestled between the Columbia River and the stunning Grand Coulee. The city is approximately 15 miles from the larger town of Electric City and about 20 miles from Coulee City, making it a quiet retreat close to urban conveniences. Covering a land area of 47.20 square miles, Coulee Dam also features a water area of 4.43 square miles, contributing to its diverse landscape of both land and water.

Community & economy

The character of Coulee Dam is shaped by its close-knit community and picturesque surroundings. The local economy benefits from tourism, owing to its proximity to the Grand Coulee Dam, and features various small businesses and services that cater to residents and visitors alike. Daily life in Coulee Dam reflects a blend of rural charm and recreational opportunities, with residents often engaging in outdoor activities given the natural beauty of the area.

Transportation

Coulee Dam is accessible via Highway 155, which connects the city to nearby areas and provides routes to larger cities in the region. The nearest major airport is Grant County International Airport, situated approximately 70 miles away, offering both commercial flights and private aviation options. Local transit is limited, but the scenic highways provide a picturesque drive through the region.

History

Coulee Dam was officially established around the construction of the Grand Coulee Dam, which began in the 1930s and significantly influenced the area’s development. Historically, the region has relied on hydropower, agriculture, and tourism as key industries. The completion of the dam in 1942 transformed the landscape and economy, leading to the establishment of the city as a hub for activity and settlement.

Did you know?

A little-known fact about Coulee Dam is that the surrounding Grand Coulee Dam features a visitor center that provides educational exhibits about hydropower and its significance to the region's economy. Additionally, the city's landscape is home to stunning views of the Columbia River, particularly from the famous Banks Lake area.

ZIP codes for Coulee Dam, WA (1)

ZIP code	City	County	Map
99116	Coulee Dam	Okanogan	View map

Demographics & statistics

1,538

Population

43.9

Median age

$62,794

Median household income

$41,868

Per capita income

$189,600

Median home value

$882

Median monthly rent

67.3%

Home ownership

12.6%

Poverty rate

8.1%

Unemployment

546

Housing units

32.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

105

20–24

25–34

35–44

121

45–54

104

55–59

60–64

113

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	261	17.0%
18 and over	1,277	83.0%
65 and over	397	25.8%
Median age	43.9 years

Race & ethnicity

White 53.7%

American Indian / Alaska Native 38.6%

Two or more races 5.8%

Asian 0.9%

Black or African American 0.5%

Native Hawaiian / Pacific Islander 0.3%

Hispanic or Latino 0.2%

Group	Count	%
White	828	53.7%
American Indian / Alaska Native	595	38.6%
Two or more races	89	5.8%
Asian	14	0.9%
Black or African American	8	0.5%
Native Hawaiian / Pacific Islander	4	0.3%
Hispanic or Latino	3	0.2%

Household income

Under $10k 3.7%

$10k–$15k 3.9%

$15k–$25k 3.4%

$25k–$35k 7.9%

$35k–$50k 9.5%

$50k–$75k 28.8%

$75k–$100k 12.1%

$100k–$150k 12.3%

$150k–$200k 14.2%

$200k+ 4.2%

Range	% of households
Under $10k	3.7%
$10k–$15k	3.9%
$15k–$25k	3.4%
$25k–$35k	7.9%
$35k–$50k	9.5%
$50k–$75k	28.8%
$75k–$100k	12.1%
$100k–$150k	12.3%
$150k–$200k	14.2%
$200k+	4.2%
Median income	$62,794

Housing

Home values

Under $50k 6.7%

$50k–$100k 9.3%

$100k–$150k 15.2%

$150k–$200k 20.9%

$200k–$300k 40.9%

$300k–$500k 4.3%

$500k–$1M 2.4%

$1M+ 0.2%

Housing overview

Metric	Value
Median home value	$189,600
Median rent / month	$882
Owner occupied	67.3%
Renter occupied	32.7%
Vacant	11.2%
Single-family detached	79.9%
Large apartment buildings	1.0%
Mobile homes	5.3%
Median rooms	5.3
Avg household size (owned)	2.40

Year built

Era	%
2020 or later	0.0%
2010–2019	1.0%
2000–2009	5.3%
1990–1999	1.6%
1980–1989	13.0%
1970–1979	12.7%
1960–1969	11.3%
1950–1959	8.1%
1940–1949	12.9%
1939 or earlier	34.2%

Bedrooms

Size	% of units
No bedroom (studio)	2.3%
1 bedroom	7.7%
2 bedrooms	35.1%
3 bedrooms	32.9%
4 bedrooms	18.1%
5+ bedrooms	4.0%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	44.0%
2 vehicles	27.0%
3 or more	23.1%

Heating fuel

Fuel type	%
Electricity	86.1%
Wood	13.3%

Households & families

Household type	Count	%
Married-couple family	237	34.6%
Cohabiting couple	52	7.6%
Male householder, no spouse	217	31.7%
Female householder, no spouse	178	26.0%
Households with children under 18	158	23.1%
Households with seniors (65+)	281	41.1%
Average household size	2.18

Marital status

Status	Male	Female
Never married	36.8%	31.3%
Married	36.4%	43.3%
Separated	4.3%	0.0%
Widowed	4.8%	10.9%
Divorced	17.6%	14.5%

Education

Less than 9th grade 2.4%

Some HS, no diploma 3.2%

HS graduate 24.0%

Some college, no degree 26.5%

Associate's degree 11.6%

Bachelor's degree 23.6%

Graduate / professional 8.7%

Metric	%
HS diploma or higher	94.4%
Bachelor's or higher	32.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	20	5.5%
Kindergarten	9	2.5%
Elementary school	112	30.8%
High school	56	15.4%
College / grad school	167	45.9%

Employment

Industry of employment

Public administration 32.7%

Education & healthcare 17.0%

Arts, food & hospitality 11.1%

Professional & management 8.8%

Agriculture & mining 6.8%

Transportation & utilities 5.9%

Retail trade 4.6%

Finance & real estate 4.3%

Construction 3.2%

Other services 2.0%

Information 1.8%

Manufacturing 1.7%

Occupation

Category	%
Management, business & arts	42.8%
Service	17.5%
Sales & office	17.7%
Natural resources & construction	15.1%
Production & transportation	7.0%

Employment type

Type	%
Private sector	35.5%
Government	61.6%
Self-employed	2.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.8%
Carpool	6.9%
Public transit	0.0%
Walk	6.3%
Other means	1.5%
Avg commute (minutes)	16.9

Poverty

All people 12.6%

Under 18 years 11.2%

18 and over 12.8%

Married-couple families 0.4%

Female-led households 28.8%

Income support

Source	% of households
Social Security	37.3%
Retirement income	33.5%
Supplemental Security	2.3%
Cash public assistance	2.3%
Food stamps / SNAP	5.6%

Health indicators

Condition	%
High blood pressure	38.2%
High cholesterol	34.6%
Heart disease	9.4%
Stroke	4.8%
Asthma	12.7%
Arthritis	33.1%
Kidney disease	4.1%
Pulmonary disease	10.2%
Cancer	8.1%

Behavior / access	%
Binge drinking	14.2%
No physical activity	25.3%
Less than 7 hrs sleep	34.5%
Fair or poor health	21.9%
Poor mental health	17.3%
Poor physical health	15.8%
No health insurance	12.3%
Visited doctor (checkup)	71.4%
Visited dentist	54.6%
Cholesterol screening	88.3%
Teeth loss	17.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	183	14.3%

Disability	%
Any disability	21.3%
Under 18	3.4%
18–64 years	15.0%
65 and over	46.9%

Health insurance coverage

Type	%
Private insurance	70.1%
Public insurance	39.8%
Uninsured under 19	7.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,462	95.1%
Spanish	34	2.3%
Other Indo-European	23	1.6%
Asian & Pacific Islander	0	0.0%
Other languages	3	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,491	96.9%
Born in same state	1,454	94.5%
Born in different state	1,008	65.5%
Foreign born	37	2.4%
Naturalized citizen	47	3.1%
Not a US citizen	17	36.2%

Ancestry

Ancestry	Count	%
French	151	9.8%
Italian	143	9.3%
Arab	117	7.6%

Ancestry	Count	%
Polish	52	3.4%
English	6	0.4%
Dutch	4	0.3%

Technology access

Metric	% of households
Computer access	44.5%
Internet access	88.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Coulee Dam, WA have?

Coulee Dam, WA has one ZIP code: 99116. Each ZIP code serves a distinct delivery area within the city and surrounding region.